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<?php declare(strict_types=1); |
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namespace Stratadox\EntityState\Internal; |
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use function array_merge as these; |
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use function assert; |
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use function is_object; |
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use Stratadox\EntityState\PropertyState; |
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use Stratadox\Specification\Contract\Satisfiable; |
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final class ObjectExtractor implements Extractor |
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{ |
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private $next; |
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private $stringifier; |
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private function __construct(Extractor $next, Satisfiable $constraint) |
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{ |
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$this->next = $next; |
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$this->stringifier = $constraint; |
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} |
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public static function withAlternative(Extractor $next): Extractor |
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{ |
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return new self($next, Unsatisfiable::constraint()); |
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} |
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public static function stringifyingWithAlternative( |
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Satisfiable $constraint, |
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Extractor $next |
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): Extractor { |
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return new self($next, $constraint); |
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} |
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public function extract( |
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ExtractionRequest $request, |
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Extractor $base = null |
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): array { |
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if (!is_object($request->value())) { |
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return $this->next->extract($request, $base); |
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} |
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if ($this->stringifier->isSatisfiedBy($request->value())) { |
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return [PropertyState::with( |
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(string) $request->objectName(), |
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(string) $request->value() |
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)]; |
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} |
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if ($request->pointsToAnotherEntity()) { |
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return [PropertyState::with( |
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(string) $request->objectName(), |
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$request->otherEntityId() |
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)]; |
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} |
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assert($base !== null); |
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$properties = []; |
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foreach (ReflectionProperties::ofThe($request->value()) as $property) { |
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$properties[] = $base->extract( |
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$request->forProperty($property), |
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$base |
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); |
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} |
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if (empty($properties)) { |
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return $request->isTheOwner() ? |
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[] : |
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[PropertyState::with((string) $request->objectName(), null)]; |
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} |
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return these(...$properties); |
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} |
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} |
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Stratadox /
EntityState
